Folding-chair construction



Sept. 24, 1929. w. c. RASTETTER FOLDING CHAIR CONSTRUCTION Filed Jan.11, 1928 2 Sheets-Sheet ATTORNEY IIIIIII'IIIIIIIIIIIIIIIII.

p 24, 1929- 'w. c. RASTETTER 1,729,488

FOLDING CHAIR CONSTRUCTION Filed Jan. 11, 1928 2 Sheets-Sheet 2 BY MATTORNEY.

Patented Sept. 24, 1929 PATENT OFFICE WILLIAM C. RAS'IE'ITER, or rearWAYNE, INDIANA FOLDING-CHAIR CONSTRUCTION Application filed January 11,1928.

This invention relates to improvements in folding chair construction inwhich a seat is pivotally mounted in a collapsible frame, and which seatis so disposed as to be moved into position for use automatically whenthe legs of the frame are extended. The Object of the improvement is toprovide a fixture for each side of the seat frame to form a bearingtherefor and which will re-enforce the frame at the point where the seatrod extends through, and which fixture also forms a bear ing for themember by which the seat frame is tilted. A further object is to providea bearing fixture for each side of the seat frame which will also serveas a securing means for the seat in connection with the seat frame.

These objects are accomplished by the construction illustrated in theaccompanying drawings, in which Fig. 1 is a side elevation in sectionshowing a folding chair in which the invention is incorporated;

Fig. 2 is a detail fragmentary assembly view of a chair in foldedposition with the invention applied thereto, parts being upon anenlarged scale;

Fig. 3 is a similar view of the parts shown in Fig. 2, but in extendedposition for use, and Fig. 4 is a rear view of the chair.

The characters appearing in the description refer to Darts shown in thedrawings and designated t ereon by corresponding characters.

The folding chair comprises a main frame constituting a back 1 andforelegs 2, there being a seat rod 3 with its ends rigidly securedin'the corresponding legs 2. A pair of rear legs 4 are provided at theirupper ends on the rod 3 respectively adjacent the corresponding frontlegs 2, there being a spacer 5 between each front and rear leg on saidrod.

A seat frame 6 is mounted upon the rod 3, said rod extending througheach side of said seat frame, and between each rear leg and thecorresponding side of the seat frame 6 is positioned on said rod a dog 7having a jaw 8, there being a spacer 9 between the dog and said frame,and another spacer 10 between said dog and the adjacent rear leg 4. Eachdog has a tail 11 that is rigidly se- Serial N 0. 245,912.

cured to the corresponding rear leg 4 so that as said rear legs areturned upon the seat rod the dogs will be moved accordingly.

A particular feature of the invention consists in a fixture for the seatframe, which fixture consists of a metal plate 12 having along one edgea flange 13 that extends throughout its length, which flange has madetherein spurs 14 and 15 that project respectively from the oppositefaces of said flange. The plate 12 has at its edge opposite said flangean angular extension 16. The fixture is applied to the chair constructne fix ure on the inner face of each side of the seat frame, its flangeextending into the seat groove 17 in said seat frame, and the angularextension projecting beneath the frame against the lower face thereof.The seat rod 3 extends through each fixture and said fixtures bear uponsaid rod. The spurs 14 and 15 in the flange of the fixture extendrespectively into the seat 18 when the latter is inserted in the groove17, and into the seat frame so that the seat is thereby held securely inits frame.

The extension 16 of the fixture forms a bear- F ing for the jaw 8 of thecorresponding dog with which it has contact, there being a slightindentation 19 in said extension in which the upper edge of the aw ofsaid dog seats when the chair is in extended position.

The rear legs 1 are connected with the back 1 by a corresponding pair ofarms 20, each. arm being pivoted at its upper end to the correspondingside of the back by a pivot 21, the lower end of the arm having anelongated slot 22 therein through which slot extends a cross rod 23 thatis fixed in the rear legs at a point spaced from their lower ends. Inthis manner said arms and rear legs have limited sliding relation. Thearms 20 are connected by a cross piece 24 to form a stop for the rearend of the seat frame with which the seat frame has contact when thechair is extended.

A brace member 25 is arranged upon the seat rod and cross rod 23 to addrigidity to the rear leg structure. Also, a back rest 26 is secured asits upper end in the back 1 and has sliding connection at its lower endwith the arms 20.

In utilizing the invention the chair is folded by tilting the seat frameupwardly into the frame, the rear end of the seat 18 hearing against thebrace member 25, causes the rear leg structure and the arms attachedthereto to fold in between the front legs. When the chair is unfoldedthe extensions 16 of the plates 12, as the seat frame is moved intoextended position, bear against the jaws of the dogs, which causesunfolding movement of the rear legs and corresponding movement of thearms.

The fixtures thus applied to the seat frame and seat strength the seatframe and secure the seat therein, as well as prevent marring of theseat frame by the jaws of the dogs.

What I claim is 1. A fixture for a folding chair structure, whichstructure has a relatively movable seat and legs, said fixtureconsisting of a plate having a flange along one edge, provided withoppositely disposed spurs, and having an angular extension contiguouswith its edge opposite said flange, said spurs having engagement in saidseat, and said extension forming a contact bearing on the bottom of theseat frame for the leg structure.

2. A fixture for a folding chair structure, which structure has a seatframe and seat positioned in the frame, and folding legs in pivotalconnection with said frame, said fixture consisting of a plate having aflange along one edge provided with oppositely disposed spurs, andhaving an angular extension contiguous with its edge opposite saidflange, said spurs having engagement in said seat and frame, and saidextension forming a contact bearing on the bottom of said frame for theleg structure.

A fixture for a folding chair structure, consisting of a plate having aflange along one of its edges which flange is provided with upwardly anddownwardly projecting spurs, and an angular extension contiguous withthe edge of said plate opposite said flange.

1. A fixture for a folding chair structure, which structure includes aseat-frame and pivoted folding legs, and a member on said folding legsfor tilting the seat; and a fixture consisting of a plate fixed uponsaid seat-frame, forming a bearing for the pivotal connection betweenthe seat and legs, and being provided with a lateral extension forming acontact bearing beneath the seat for said member.

In testimony whereof I aflix my signature.

WILLIAM C. RASTE-TTER.

